An
HTML tag which tells the
browser to
display a text entry box on the current page. Any text
entered in the box by the user is appended as a URL-encoded
query string to the current
URL and sent to the
server
using a GET method.
This is a simple way of making a
website searchable or
allowing other kinds of simple user input. It relies on the
server mapping the query URL to an appropriate process,
probably depending on the page in which the ISINDEX appeared.
More complex input can be catered for using the
FORM tag, or
Java.